<legend class="fieldLogin fundoCinza">Digite o seu Login e senha</legend>
<div align="center">
    <form method="post" id="formulario" action="<?php echo url_for('login/autenticar') ?>">
        </br>
        <p style="text-align: center">
            <label>Login</label>
            <input type="text" name="login" autofocus required placeholder="Informe o login"/>
        </p>
        <p style="text-align: center">
            <label>Senha</label>
            <input type="password" name="senha" autofocus required placeholder="Informe a senha"/>
        </p>
        <p style="text-align: center">
            <button type="submit" value="Acessar" class="botaoAtualizarCinza">Acessar</button>
        </p>
        </br> 
    </form>
</div>